feat: add Strava integration with OAuth flow and activity management

- Implemented IntegrationView for listing integrations including Immich, Google Maps, and Strava.
- Created StravaIntegrationView for handling OAuth authorization and token exchange.
- Added functionality to refresh Strava access tokens when needed.
- Implemented endpoints to fetch user activities from Strava and extract essential information.
- Added Strava logo asset and integrated it into the frontend settings page.
- Updated settings page to display Strava integration status.
- Enhanced location management to include trails with create, edit, and delete functionalities.
- Updated types and localization files to support new features.

backend/server/.env.example

@@ -13,6 +13,9 @@ FRONTEND_URL='http://localhost:3000'
 
 EMAIL_BACKEND='console'
 
+# STRAVA_CLIENT_ID=''
+# STRAVA_CLIENT_SECRET=''
+
 # EMAIL_BACKEND='email'
 # EMAIL_HOST='smtp.gmail.com'
 # EMAIL_USE_TLS=False